[レポート] Building Agent-powered Apps with AWS Bedrock + Vercel に参加してきました！ #AIM127-S #AWSreInvent

pnpm setup
export PNPM_HOME="/Users/ono.ikumi/Library/pnpm"
export PATH="$PNPM_HOME:$PATH"
pnpm i -g vercel
vercel link

reinvent-coding-agent/
├── api/                    # Vercel Serverless Functions
│   ├── agent.ts           # メインAPIエンドポイント（POST /api/agent）
│   ├── slack.ts           # Slack Bot連携
│   └── discord.ts         # Discord Bot連携
├── utils/                  # コアロジック
│   ├── agent.ts           # エージェント実装（generateText + ツール定義）
│   ├── sandbox.ts         # Vercel Sandbox操作（ファイル操作、PR作成）
│   └── test.ts            # テストスクリプト
├── package.json           # 依存関係（ai, @ai-sdk/gateway, @vercel/sandbox等）
├── tsconfig.json          # TypeScript設定
├── vercel.json            # Vercel設定
└── .env.local             # 環境変数（VERCEL_OIDC_TOKEN, GITHUB_TOKEN）

cp .env.example .env.local
vercel env pull

$ pnpm run test

> reinvent-agents-workshop@1.0.0 test
> tsx utils/test.ts

GatewayInternalServerError: AI Gateway requires a valid credit card on file to service requests.
Please visit https://vercel.com/d?to=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxdd-credit-card to add a card and unlock your free credits.

const result = await generateText({
  model: gateway("anthropic/claude-sonnet-4"),
  providerOptions: {
    gateway: { order: ["bedrock", "anthropic"] }
  },
  // ...
});

$ pnpm run test

> reinvent-agents-workshop@1.0.0 test
> tsx utils/test.ts

Listing files at '.'
Reading file at 'package.json'
Reading file at 'README.md'
Listing files at 'api'
Listing files at 'utils'
Reading file at 'tsconfig.json'
{
  response: '## Project Overview\n' +
    "This is **reinvent-agents-workshop** - an AI-powered coding agent built with modern TypeScript...\n" +
    '### Core Functionality\n' +
    '- **AI Coding Agent**: Uses AI SDK to read and modify GitHub repositories\n' +
    '- **Multi-Platform**: Accessible via API, Slack bot, or Discord bot\n' +
    '- **Automated PRs**: Creates pull requests with code changes based on natural language prompts\n'
}

repoUrl: https://github.com/xxxxxxxx/reinvent-coding-agent
GITHUB_TOKEN exists: true
Using auth URL: [authenticated]
Listing files in: .
Files listed successfully for: .
total 76
drwxr-x---  5 vercel-sandbox vercel-sandbox   179 Dec  2 07:01 .
-rw-r--r--  1 vercel-sandbox vercel-sandbox  4381 Dec  2 07:01 README.md
drwxr-xr-x  2 vercel-sandbox vercel-sandbox    56 Dec  2 07:01 api
...

Reading file: README.md
File read successfully: README.md # AI SDK Coding Agent...
Editing file: README.md
File edited successfully: README.md
Creating PR with title: Add "hey were so back" to README...

No GitHub account was found matching the commit author email address

# 開発サーバー起動
$ vercel dev
Vercel CLI 48.9.0
> Ready! Available at http://localhost:3000

# 別ターミナルからリクエスト送信
$ curl -X POST localhost:3000/api/agent \
  -H "Content-Type: application/json" \
  -d '{"prompt":"READMEを更新して","repoUrl":"https://github.com/xxxxxxxx/reinvent-coding-agent"}'

{
  "response": "Done! I've successfully added a Contributing section to the README with standard formatting and guidelines. The section includes:\n- Getting started instructions for new contributors\n- Guidelines for making changes\n- Process for submitting pull requests\n- Code of conduct reminder\n- Information on how to get help\n\nThe pull request has been created and is available at: https://github.com/xxxxxxxx/reinvent-coding-agent/pull/1"
}